One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)?
Clearly, there are 52 cards, out of which there are 12 face cards.
P (getting a face card) = 12/52=3/13.
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
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Find the standard deviation of {11, 7, 10,13, 9}
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If the standard deviation of a population is 3, what would be the population variance?
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If the standard deviation of a population is 10, what would be the population variance?